The term 'white-tailed shorebirds' refers to a group of birds that are found in coastal areas and estuaries. The most common species of white-tailed shorebird is the ern, which is a medium-sized wading bird with a long, thin bill and a white tail. The ern is found in many parts of the world, including Europe, Asia, Africa, and North America. They feed on small fish, crustaceans, and other aquatic invertebrates.